2014-03-21 00:07 arielenter has quit [Ping timeout: 246 seconds] 2014-03-21 00:33 wolfspraul has quit [Ping timeout: 264 seconds] 2014-03-21 00:35 wolfspraul has joined #qi-hardware 2014-03-21 01:05 quiet earth? 2014-03-21 01:06 that's kinda scary when even the gaby #openpandora turns silent 2014-03-21 01:06 gabby even 2014-03-21 01:07 !ping 2014-03-21 01:28 porchao has quit [Quit: Leaving...] 2014-03-21 01:28 atommann has joined #qi-hardware 2014-03-21 01:32 dos1 has quit [Ping timeout: 246 seconds] 2014-03-21 01:34 atommann has quit [Ping timeout: 240 seconds] 2014-03-21 01:50 atommann has joined #qi-hardware 2014-03-21 02:10 xiangfu has joined #qi-hardware 2014-03-21 02:10 dandon has quit [Quit: i might never be back. blow me] 2014-03-21 03:15 bzb has joined #qi-hardware 2014-03-21 03:42 porchao has joined #qi-hardware 2014-03-21 03:56 bzb has quit [Quit: I hate to quit but my bladder's full. :-(] 2014-03-21 04:53 dandon has joined #qi-hardware 2014-03-21 04:58 DocScrutinizer05: I was sleeping :p 2014-03-21 04:58 so, yes, those holes *are* weird 2014-03-21 04:58 I fixed the PCB with the clamp attachment system of my own invention 2014-03-21 04:58 I used to use masking tape but it was too elastic, as you've said 2014-03-21 05:00 maybe try a single slot cut and see how it turns out 2014-03-21 05:00 I can say one thing, if I mill it CW instead of CCW, the direction in which those gaps point inverts 2014-03-21 05:00 then add two parallel cuts at, say, +/- tool_radius/2 2014-03-21 05:00 *nod* 2014-03-21 05:01 hmmm. that doesn't sound too good 2014-03-21 05:01 something is moving 2014-03-21 05:01 I'm suspecting cutter radius compensation a bit 2014-03-21 05:02 though, not sure 2014-03-21 05:03 maybe. anyway, those test cuts shouldn't be affected by radius compensation 2014-03-21 05:04 arielenter has joined #qi-hardware 2014-03-21 05:05 arielenter has quit [Client Quit] 2014-03-21 05:08 Luke-Jr has quit [Excess Flood] 2014-03-21 05:09 Luke-Jr has joined #qi-hardware 2014-03-21 05:09 Luke-Jr has quit [Changing host] 2014-03-21 05:09 Luke-Jr has joined #qi-hardware 2014-03-21 05:09 ok. lemme check with a slot. 2014-03-21 05:13 Luke-Jr has quit [Excess Flood] 2014-03-21 05:14 Luke-Jr has joined #qi-hardware 2014-03-21 05:16 wpwrak: http://i.imgur.com/sGPEBfN.jpg 2014-03-21 05:16 without any cutter compensation 2014-03-21 05:17 hmm, on both ends 2014-03-21 05:17 something is moving 2014-03-21 05:18 what would a perpendicular cut look like ? 2014-03-21 05:19 rozzin has quit [Ping timeout: 264 seconds] 2014-03-21 05:19 and i wonder whether your clamps really hold it well enough. better: make a "bridge" where each clamp has two screws. you already made nice holes for just that ... :) 2014-03-21 05:19 that wouldn't really work well with arbitrarily sized material 2014-03-21 05:19 (well enough) I can't feel any movement when jerking workpiece with my hands as hard as I can 2014-03-21 05:20 let's worry about that later :) 2014-03-21 05:20 I'd rather move the whole machine than workpiece against table 2014-03-21 05:20 unlike my previous setup with masking tape & etc 2014-03-21 05:20 hmm 2014-03-21 05:21 how about movement along the Z axis ? can you move the end that's far from the screws ? 2014-03-21 05:22 let me just fix it with 4 clamps 2014-03-21 05:24 http://i.imgur.com/iHcpQ1Z.jpg 2014-03-21 05:24 absolutely no difference whatsoever 2014-03-21 05:25 ah well, at least know we know it's not that 2014-03-21 05:25 perpendicular ? 2014-03-21 05:26 and is this the entry or the exit hole ? 2014-03-21 05:27 left is entry 2014-03-21 05:27 perpendicular: exactly same thing rotated by 90° 2014-03-21 05:28 what happens if you make two cuts in the same run ? 2014-03-21 05:28 hm? 2014-03-21 05:28 (two parallel ones) 2014-03-21 05:28 well... you've seen that on board from yesterday, haven't you? 2014-03-21 05:28 I'm not sure what you're looking for 2014-03-21 05:29 i wonder whether the head may have some play that gets "consumed" when you start cutting 2014-03-21 05:29 but yes, given yesterday's results, maybe not 2014-03-21 05:29 yeah 2014-03-21 05:30 so on entry and exit cuts, head for some reason moves to the right relative to cutter movement 2014-03-21 05:30 that would suggest that the head or the spindle has some play no matter what 2014-03-21 05:30 hm 2014-03-21 05:30 no, I think not! 2014-03-21 05:30 I have an idea 2014-03-21 05:31 space aliens ? 2014-03-21 05:32 no 2014-03-21 05:33 http://i.imgur.com/jCFvkaQ.jpg 2014-03-21 05:33 rightmost cut is better, isn't it? 2014-03-21 05:33 what do you think changed? 2014-03-21 05:34 speed ? 2014-03-21 05:34 yeah, feedrate 2014-03-21 05:34 it's not entry/exit holes which are screwed up 2014-03-21 05:34 it's the cut itself 2014-03-21 05:34 bafore/after ? 2014-03-21 05:34 s/ba/be/ 2014-03-21 05:34 wpwrak meant: "before/after ?" 2014-03-21 05:34 this endmill is *long*, it's almost 5mm 2014-03-21 05:34 so it deflects when I move it at 300mm/min 2014-03-21 05:34 what diameter ? 2014-03-21 05:35 1mm 2014-03-21 05:35 and yes, this is definitely not a drill 2014-03-21 05:35 grr. wasn't "go slower" the first thing i suggested ? :) 2014-03-21 05:35 well... that's first thing one usually does :p 2014-03-21 05:36 anyway, I should've used my favorite endmill, it's carbide instead of HSS and just 3mm long 2014-03-21 05:36 that one doesn't deflect half a millimeter 2014-03-21 05:37 oh, that 5 mm critter is HSS ? maybe it looks like an endmill but is a broken drill ? :) 2014-03-21 05:38 hehe 2014-03-21 05:38 well, at least now we know why were they so cheap 2014-03-21 05:38 hope your time has very little cost :) 2014-03-21 05:38 anyway, they work much better as drills than the drills I've got, and they're perfectly fine for cutting wood 2014-03-21 05:39 yeah, wood is quite forgiving. and versatile, too. a bit of pinewood goes a long way ... 2014-03-21 06:03 (([2014-03-21 06:34:22] it's the cut itself)) toldya 2014-03-21 06:03 rozzin has joined #qi-hardware 2014-03-21 06:03 right, right. I'll just move back to lower feedrate and proper endmill 2014-03-21 06:04 talking about that... need to make another attempt at plating 2014-03-21 06:13 https://pbs.twimg.com/media/BjOAu72CUAAPVGi.jpg "after disconnecting external monitor" 2014-03-21 06:14 how does this thing even happen? LCD driver gone completely mad? 2014-03-21 06:25 crazy 2014-03-21 06:54 jekhor has joined #qi-hardware 2014-03-21 07:24 xiangfu has quit [Remote host closed the connection] 2014-03-21 07:33 atommann has quit [Ping timeout: 240 seconds] 2014-03-21 07:39 qi-bot has quit [Ping timeout: 265 seconds] 2014-03-21 07:41 ohhh crap 2014-03-21 07:41 I forgout about it being blue 2014-03-21 07:41 meaning there's more than just water in solution; there's also captured water coordinated together with salt, giving it its blue color, characteristic for H2O complexes of copper 2014-03-21 07:42 and that water boils no worse than the regular one 2014-03-21 08:01 pcercuei has joined #qi-hardware 2014-03-21 08:05 pcercuei is now known as zcrc 2014-03-21 08:09 snufkintardis has joined #qi-hardware 2014-03-21 08:40 wow, seems wpwrak was right 2014-03-21 08:40 if I *slowly* heat up copper hypophosphite, it produces some kind of gold film on surface 2014-03-21 08:42 http://i.imgur.com/nWO3SMd.jpg 2014-03-21 08:44 I really wonder wtf is that compound 2014-03-21 08:51 oh wow, if I crank up the heat, that black thing actually turns into copper 2014-03-21 08:51 so it's surely not CuO 2014-03-21 08:51 honestly I'm entirely lost as to what chemistry describes this process 2014-03-21 08:51 yeah, at the end it has almost entirely turned to something copper-colored 2014-03-21 08:51 WTF 2014-03-21 08:53 so in various stages of the process I've seen surface becoming gold-colored, black, white and blue 2014-03-21 08:54 and I've seen copper, grayish-white and black crystals grow and disappear 2014-03-21 09:00 http://i.imgur.com/Rpj7g9T.jpg 2014-03-21 09:00 http://i.imgur.com/M28dtlb.jpg 2014-03-21 09:14 snufkintardis has quit [Quit: Leaving] 2014-03-21 09:35 xiangfu has joined #qi-hardware 2014-03-21 09:45 qi-bot has joined #qi-hardware 2014-03-21 09:54 hm, what if I make a cross-section of the board? seems to be used in industry for examining things unaccessible to eye 2014-03-21 09:58 xiangfu has quit [Remote host closed the connection] 2014-03-21 10:05 hrm. no clue whether it is legitimately that bad, or milling it in half with an endmill made it worse. 2014-03-21 10:10 rz2k has joined #qi-hardware 2014-03-21 11:16 (monitor gone wild) seems that is figured out where you keep he "acid" :) 2014-03-21 11:17 * whitequark giggles 2014-03-21 11:17 wpwrak: latest try: http://imgur.com/9EMucAl,73saqVL,YVPIst4#0 2014-03-21 11:17 quite beautiful, isn't it? 2014-03-21 11:18 esp 2nd hole in lowest row 2014-03-21 11:20 they look pretty smooth indeed 2014-03-21 11:21 still needs more work. but, the direction is right. 2014-03-21 11:21 perhaps a bath with more carefully set pH and pCl¯ would work better. 2014-03-21 11:22 does the copper rub off ? 2014-03-21 11:22 rub off? you mean like by fingers? 2014-03-21 11:23 no, this time it's as strong as factory-plated copper 2014-03-21 11:23 great ! 2014-03-21 11:23 in fact I was curious and inserted an 1.0mm endmill used to drill those holes and turned it a few times inside 2014-03-21 11:23 the copper is still there, now just more shiny 2014-03-21 11:24 * whitequark *really* likes the color of freshly plated copper 2014-03-21 11:25 oh by the way, it also solders really well 2014-03-21 11:25 even without tinning! 2014-03-21 11:42 hmm, with that huge unbroken copper surface ? that should be nearly impossible to solder 2014-03-21 11:42 well, unlesss you preheat the board 2014-03-21 12:36 jekhor has quit [Ping timeout: 240 seconds] 2014-03-21 12:49 snufkin has joined #qi-hardware 2014-03-21 12:52 atommann has joined #qi-hardware 2014-03-21 12:52 snufkin has quit [Max SendQ exceeded] 2014-03-21 12:52 snufkin has joined #qi-hardware 2014-03-21 12:52 nicksydney has quit [Remote host closed the connection] 2014-03-21 12:56 snufkin has quit [Max SendQ exceeded] 2014-03-21 12:57 snufkin has joined #qi-hardware 2014-03-21 12:57 nicksydney has joined #qi-hardware 2014-03-21 12:59 nicksydney has quit [Remote host closed the connection] 2014-03-21 13:01 snufkin has quit [Max SendQ exceeded] 2014-03-21 13:02 nicksydney has joined #qi-hardware 2014-03-21 13:02 snufkin has joined #qi-hardware 2014-03-21 13:08 wpwrak: nah, not very hard 2014-03-21 13:16 nicksydney has quit [Remote host closed the connection] 2014-03-21 13:21 snufkin has quit [Disconnected by services] 2014-03-21 13:22 snufkin has joined #qi-hardware 2014-03-21 13:22 nicksydney has joined #qi-hardware 2014-03-21 13:27 nicksydney has quit [Remote host closed the connection] 2014-03-21 13:31 snufkin has quit [Disconnected by services] 2014-03-21 13:31 snufkintardis has joined #qi-hardware 2014-03-21 13:36 rz2k has quit [] 2014-03-21 13:44 zcrc_ has joined #qi-hardware 2014-03-21 13:47 zcrc has quit [Ping timeout: 252 seconds] 2014-03-21 14:20 nicksydney has joined #qi-hardware 2014-03-21 14:33 wpwrak: completed KL25Z bootloader upgrade ..now can flash from Linux 2014-03-21 14:34 wpwrak: are you able to use the serial from the SDA usb ? 2014-03-21 14:43 nicksydney has quit [Remote host closed the connection] 2014-03-21 14:45 nicksydney has joined #qi-hardware 2014-03-21 14:48 ok found the serial looks like mine is called /dev/ttyACM0 2014-03-21 14:52 got the sample code from here https://github.com/payne92/bare-metal-arm and the makefile covers everything from downloading the gcc to compiling and flashing..very convenient 2014-03-21 15:08 whitequark: perhaps i shouldn't ask about your soldering iron then :) does it even need electricity or does it come with an ex military power source with a "lifetime guarantee" ? 2014-03-21 15:09 nicksydney: congratulations. ah, it has serial ? never tried ;-) 2014-03-21 15:09 yes, bare-metal-arm is very very convenient :) 2014-03-21 15:09 wpwrak: yes it has serial...the sample from that github shows the accelerometer and touch values 2014-03-21 15:09 wpwrak: a 30W iron I believe 2014-03-21 15:09 the serial is in the SDA USB 2014-03-21 15:10 ah, right. now i remember. briefly used it as well. 2014-03-21 15:13 ok time to hit the bed 2014-03-21 16:10 zcrc_ is now known as zcrc 2014-03-21 16:14 atommann has quit [Ping timeout: 246 seconds] 2014-03-21 16:21 arielenter has joined #qi-hardware 2014-03-21 16:21 atommann has joined #qi-hardware 2014-03-21 16:48 zcrc has quit [Ping timeout: 252 seconds] 2014-03-21 16:59 rz2k has joined #qi-hardware 2014-03-21 17:02 jekhor has joined #qi-hardware 2014-03-21 17:04 atommann has quit [Quit: Leaving] 2014-03-21 17:06 wpwrak: very fascinating 2014-03-21 17:07 since I stopped using NaOH for preparing copper surface and instead use isopropanol+5second etch, persulphate started to work really well 2014-03-21 17:07 seems I inadvertently passivated it 2014-03-21 17:08 also, when persulphate works well, it emits a *ton* of SO2. I wanna a fume hood 2014-03-21 17:08 *cough* 2014-03-21 17:08 pretty good irritant 2014-03-21 17:20 jekhor has quit [Ping timeout: 240 seconds] 2014-03-21 17:22 arielenter has quit [Read error: No route to host] 2014-03-21 17:22 arielenter1 has joined #qi-hardware 2014-03-21 17:28 rz2k has quit [Ping timeout: 246 seconds] 2014-03-21 17:43 grmbl. 1 via out of 7 actually survived etching 2014-03-21 17:44 I need better electrodes and better alignment of negative... 2014-03-21 17:58 dos1 has joined #qi-hardware 2014-03-21 18:09 wej has quit [Ping timeout: 260 seconds] 2014-03-21 18:22 wej has joined #qi-hardware 2014-03-21 18:29 wej has quit [Ping timeout: 252 seconds] 2014-03-21 18:44 wej has joined #qi-hardware 2014-03-21 19:03 arielenter1 has quit [Read error: No route to host] 2014-03-21 19:08 arielenter has joined #qi-hardware 2014-03-21 19:13 rz2k has joined #qi-hardware 2014-03-21 19:38 i wonder what the industrial sequence for etching, plating, and drilling is 2014-03-21 19:38 hmm ... "Conventional through-hole processing usually relies on 3 or more baths to prepare the hole walls for copper plating." 2014-03-21 19:38 http://www.thinktink.com/stack/volumes/voli/store/inksup.htm 2014-03-21 19:39 (and then they suggest their magic pixie dust to do it in one step) 2014-03-21 19:58 michael_lee has joined #qi-hardware 2014-03-21 20:03 michael_lee has quit [Read error: Connection reset by peer] 2014-03-21 20:16 jekhor has joined #qi-hardware 2014-03-21 21:20 valhalla has quit [Ping timeout: 255 seconds] 2014-03-21 21:32 valhalla has joined #qi-hardware 2014-03-21 21:35 ahhh another party night 2014-03-21 21:37 wpwrak: I get a 404 2014-03-21 21:39 what kind of drink is this ? 2014-03-21 21:42 becks gold, a drink made for womens... or for a pussy like me 2014-03-21 21:43 i mean with 404 your link 2014-03-21 21:43 :D 2014-03-21 21:45 my next semester begins at monday... 2014-03-21 21:45 so this os my last weekendcin freedom 2014-03-21 21:46 and there are so many todos in 6lowpan 2014-03-21 21:47 the thinktink link ? should work 2014-03-21 21:50 doesn't seem to be too bad: http://blog.zeit.de/berlinjournal/?p=184 2014-03-21 21:50 ok. seems that my phone cant parse it 2014-03-21 21:57 sry 2014-03-21 22:22 jekhor has quit [Ping timeout: 245 seconds] 2014-03-21 22:33 >>CH29-0000-050 Conductive plating ink - 50 grams (w/dispenser cap) $109.25 << hmm, sounds fair enough 2014-03-21 22:37 dandon has quit [Remote host closed the connection] 2014-03-21 22:37 I mean, how much of that stuff will get used by a thru-hole/via wall coted by a 0.005mm thick coating of that stuff? 50g will last a loooong way, I guess 2014-03-21 22:41 wpwrak: prolly that magic pixie dust is worth each penny 2014-03-21 22:42 dunno. i found the 3 baths intriguing. 2014-03-21 22:42 not because of the "three kinds of carbon", not even because of the silver it contains, but merely because of the adhesive 2014-03-21 22:44 or we all go the classical way again: http://www.electricalrivets.com/F6880/copper_rivets.html 2014-03-21 22:44 will get a tad nasty for in-pad vias 2014-03-21 22:45 but then, when you need in-pad vias, you also need 6 layers at very least 2014-03-21 22:46 so this seems to be a non-issue for all that matters 2014-03-21 22:48 rz2k has quit [] 2014-03-21 22:48 actually I wonder if simple conductive ink to fill the complete via hole wouldn't over-accomplish the task we're discussing here, which seems to simply be: connect top and bottom copper layer traces of a 2-sided PCB 2014-03-21 22:49 sure, won't result in proper thermal vias, but hey 2014-03-21 22:50 for proper thermal vias you're probably better off with copper rivets anyway, even when comparing to via plating 2014-03-21 22:52 o.O 2014-03-21 22:53 seems I need a break - I just thought about dentists and amalgam filler 2014-03-21 22:53 FSCK RoHS! ;-P 2014-03-21 22:57 snufkintardis has quit [Quit: Leaving] 2014-03-21 23:06 i'm just waiting for the first exploding wire experiments :) 2014-03-21 23:09 oooh, those been done ~30 to 40 years ago 2014-03-21 23:10 pretty funny. Particularly when coating glass. It's amazing how strong it sticks to the glass 2014-03-21 23:10 ;-) 2014-03-21 23:10 idundidit_ has joined #qi-hardware 2014-03-21 23:11 actually for such experiments unfiltered 220V mains is the most adequate power source. You should maybe use a fast 10A protective breaker 2014-03-21 23:11 idundidit has quit [Ping timeout: 240 seconds] 2014-03-21 23:12 not that it usually would kick in, just in case you mess up stuff 2014-03-21 23:13 finding the right switch for such stuff is quite an interesting task. You want it to be very fast on closing, with low ESR and no bouncing 2014-03-21 23:16 surge killers are probably best for that task. the small ones with axial wires and a glass thingie of ~10mm diameter and 5mm height in the middle 2014-03-21 23:17 trigger that critter with a spark of some kV, e.g. from car ignition 2014-03-21 23:18 of course you rather want to use one for 110V rather than 220V, so it doesn't cut out immediately after the spark from ignition ended 2014-03-21 23:29 dos1 has quit [Read error: Connection reset by peer] 2014-03-21 23:29 dos1 has joined #qi-hardware 2014-03-21 23:32 moin dos1 2014-03-21 23:33 hello!